According to a statement posted on the Seahawks website from Courtney Moore, director of the Seahawks Dancers:

We are excited to unveil our new dance team for the 2019 season! For decades the Sea Gals have been an integral part of the Seahawks organization on and off the field. As we continually look to evolve our gameday entertainment, our dance program will now be known as “The Seahawks Dancers.” We look forward to showcasing many different types of dance styles as the team hits the field this fall. We are excited for fans to see what we’ve been working on!

Of the 38 dancers featured on the new website, eight are male, including: Zaydi, Vince, Pon, Phi, Jon, Casey, Cameron, and Avery.

(Courtesy of the Seahawks Dancers)

According to The Seattle Times, the Sea Gals debuted in 1976; also, the Los Angeles Rams, Indianapolis Colts, New Orleans Saints, Tennessee Titans, and Philadelphia Eagles have male dancers on their cheer squads. Cheer teams with men on them, in some form or another, is not new to the collegiate level of cheerleading. In fact, Franklin D. Roosevelt, Ronald Reagan, and George W. Bush were all on their college cheer squads.